callbacknull

Results 3 issues of callbacknull

changes: - adds JSON to typecasting switch in `RowDataPacket.js` - adds typecasting test case for JSON in `test-type-casting.js`

So, I had a NBUAssetsGroupViewController set up properly and definitely works in iOS 7. However, with the iOS 8 release it seems that the ObjectGridView is getting stuck in an...

bug

In this PR I've added support for flat color tokens (i.e no gradients). When the token is selected/highlighted the color is adjusted to be either slightly lighter or darker dependent...